Time duration calculator

Find the hours and minutes between two times, including across midnight.

An earlier end time is treated as the next day. Equal times give zero.

Elapsed time
100min

1 h 40 min

Your inputs stay on this device.

How to use
  1. Set the start time.
  2. Set the end time.
  3. Read the elapsed hours and minutes.

The span from 23:30 to 01:10 is 1 hour 40 minutes. An earlier end time is treated as the next day.